It's C, the amount of protons in the nucleus of each atom :)
<span>The atomic mass for copper is 63.546 amu. Copper is typically reddish orange in color and has a melting point of 1981.4 degrees Fahrenheit. It is classified as a transition metal and has an atomic number of 29.</span>
a single neutral atom of zinc has 30 protons
I don’t know but sorryyyyyy
